I am a Canadian citizen and I have been denied from the USA in the past 2 years and last year I entered illegally and was caught and given voluntary departure, but I do not have a criminal record in ...

I'm a Canadian, which is one of the visa waiver countries for the Schengen Area.
I understand the 90/180 day rule is based on your first arrival date, so the 180 day period is calculated from there.
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I am a Canadian citizen, and I intend to travel to the US for a student clinical elective at a university in Texas for the months of September and October. The university will help me obtain an F-1 ...